I have a 1997 F150 4x4 supercab with a 4.6L it starts and runs fine but sometimes when I stop or am ideling the RPMs will jump up and down then it dies sometimes but it starts right back up and if the AC is on it does not do it nearly as often I have already replaced the fuel filter,plugs and wires, EGR valve, EGR pressure sensor, and the throttle positioning sensor I have had the truck for 7 years and have always done good maintenance and it has been a great truck their are no lights on for check engine so I dont know what else it could be any help would be great because my wife and kids use the truck when i am at work and I have our car
Jul 21, 2008 at 9:38 PM